test(config): derive tests

[cooper (czxtm)]

Summary

Test Plan

Docs

• Docs updated (companion PR in darkmatter/nixmac-web: #___)
• No docs update needed

[cooper (czxtm)]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• test(config): derive tests #234 👈 (View in Graphite)
• Ship Minted theme as default #233
• feat(native): auto-generated UI for Configurable settings via inventory registry #232
• chore: derive nits #231
• protable config via .nixmac/settings.json #230
• configurables ui #229
• implement derive(Configurable) macro #228 : 1 other dependent PR (#244 )
• develop

This stack of pull requests is managed by Graphite. Learn more about stacking.

[github-actions]

	Fails
🚫	Your ## Test Plan section is empty. Describe the steps a reviewer should take to verify this change.
🚫	This PR touches behavior-sensitive code that is documented in darkmatter/nixmac-web. Please either: Open a companion docs PR and check Docs updated in the PR description, or Check No docs update needed if the change doesn't affect user-facing behavior.

	Warnings
⚠️	Please assign this PR to someone (usually yourself).
⚠️	❗ Big PR (1137 lines changed). Consider splitting it into smaller, focused changes.

📋 PR Overview

Lines changed	1137 (+1114 / -23)
Files	6 added, 9 modified, 0 deleted
Draft / WIP	no
Has Test Plan	yes
New UI components	no
New Storybook stories	yes (2)
New Rust modules	yes (1)
New TS source files	no
New tests	no
package.json touched	no
Cargo.toml touched	no
Infra / CI touched	no

🔬 Coverage

Report	Lines	Statements	Functions	Branches
apps/native/coverage/coverage-summary.json	17.8%	17.8%	31.2%	54.0%

Generated by 🚫 dangerJS against 4cb2aaf

[cooper (czxtm)]

Superseded by the rebuilt Graphite stack starting at #244 and ending at #255.